Portrait greenbottle fly, made with magnification factor 4 and f/14. The name green bottle fly or greenbottle fly is applied to numerous species of blowfly, in the genera Lucilia and Phaenicia the latter is sometimes considered a subgenus of the former. These flies are found in most areas of the world, and the most wellknown species is the common greenbottle, Phaenicia sericata or Lucilia sericata, depending on authority, though there are other common species such as Lucilia caesar, Lucilia cuprina, Lucilia coeruleiviridis, and Lucilia illustris source: Wikipedia.